Didn't know it was the number of compressor stages, or, if the Aux/Emer
coils counted as a "stage".
?



I have a heat pump (single stage compressor) with electric coils as
auxilary (emergency) heat.
Should I config the thermostat for HP1 or HP2?



If I am reading it right HP2 is for a two stage compressor so my
"thoughts" would be HP1. Now, I am not a trained HVAC person so only
giving my .02 cents..
John